package com.itheima.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.itheima.constant.MessageConstant;
import com.itheima.dao.MemberDao;
import com.itheima.dao.OrderDao;
import com.itheima.dao.OrderSettingDao;
import com.itheima.entity.PageResult;
import com.itheima.entity.Result;
import com.itheima.pojo.Member;
import com.itheima.pojo.Order;
import com.itheima.pojo.OrderSetting;
import com.itheima.pojo.PersonnelDetails;
import com.itheima.service.OrderService;
import com.itheima.utils.DateUtils;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.Date;
import java.util.List;
import java.util.Map;

/**
 * 预约服务
 */
@Service(interfaceClass = OrderService.class)
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderSettingDao orderSettingDao;
    @Autowired
    private MemberDao memberDao;
    @Autowired
    private OrderDao orderDao;

    @Override
    public Result order(Map map) throws Exception {
        //1、检查用户所选择的预约日期是否已经提前进行了预约设置，如果没有设置则无法进行预约
        String orderDate = (String) map.get("orderDate");
        Date date = DateUtils.parseString2Date(orderDate);
        OrderSetting orderSetting = orderSettingDao.findOrderSettingByDate(date);
        if (orderSetting == null) {
            return new Result(false, MessageConstant.SELECTED_DATE_CANNOT_ORDER);
        }
        //2、检查用户所选择的预约日期是否已经约满，如果已经约满则无法预约
        int number = orderSetting.getNumber();//可预约人数
        int reservations = orderSetting.getReservations();//以预约人数
        if (reservations >= number) {
            //预约已满，无法预约
            return new Result(false, MessageConstant.ORDER_FULL);
        }
        //4、检查当前用户是否为会员，如果是会员则直接完成预约，如果不是会员则自动完成注册并进行预约
        Member member = memberDao.findByTelephone((String) map.get("telephone"));
        //3、检查用户是否重复预约（同一个用户在同一天预约了同一个套餐），如果是重复预约则无法完成次预约
        if (member != null) {
            Integer memberId = member.getId();//会员id
            Integer setmealId = Integer.parseInt((String) map.get("setmealId"));//套餐id
            Order order = new Order(memberId, date,setmealId);
            List<Order> orderList = orderDao.findByCondition(order);
            if (orderList != null && orderList.size() > 0) {
                //已经完成预约
                return new Result(false, MessageConstant.HAS_ORDERED);
            }
        }
        //5、预约成功，更新当日的已预约人数
        if (member == null) {
            //当前用户不是会员
            member = new Member();
            member.setName((String) map.get("name"));
            member.setPhoneNumber((String) map.get("telephone"));
            member.setIdCard((String) map.get("idCard"));
            member.setSex((String) map.get("sex"));
            member.setRegTime(new Date());
            memberDao.add(member);
        }
        //保存信息到预约表
        Order order = new Order(
                member.getId(),
                date,
                (String) map.get("orderType"),
                Order.ORDERSTATUS_NO,
                Integer.parseInt((String) map.get("setmealId"))
        );
        orderDao.add(order);
        //预约人数加1
        orderSetting.setReservations(orderSetting.getReservations() + 1);
        orderSettingDao.editNumberByOrderDate(orderSetting);

        return new Result(true, MessageConstant.ORDER_SUCCESS, order.getId());
    }

    /**
     * 查询指定数据用于数据回显，可使用map封装数据
     * @param id
     * @return
     * @throws Exception
     */
    @Override
    public Map findById(Integer id) throws Exception {
        Map map = orderDao.findById4Detail(id);
        if (map != null) {
            Date orderDate = (Date) map.get("orderDate");
            map.put("orderDate", DateUtils.parseDate2String(orderDate));
        }
        return map;
    }


    @Override
    public PageResult findPage(Integer currentPage, Integer pageSize, String queryString) {
        //完成分页查询，基于mybatis的分页助手插件完成
        PageHelper.startPage(currentPage, pageSize);
        List<Map<String,Object>> pages = orderDao.selectByCondition(queryString);
        PageInfo<Map<String,Object>> info = new PageInfo<>(pages);
        return new PageResult(info.getTotal(), pages);
    }
}
